Wideband phase modulator

Details Wideband phase modulator Wideband phase modulator

2009-03-11

2011-10-25

Johnson, Ryan (Department: 2817)

Modulators

Phase shift keying modulator or quadrature amplitude modulator

C332S104000, C332S144000, C375S302000, C375S308000

Reexamination Certificate

active

08044742

ABSTRACT:
An apparatus for phase modulation includes a delay locked loop configured to generate from a reference signal a plurality of phase shifted signals, each of the phase shifted signals being locked to the reference signal and having a different phase shift from the other phase shifted signals with respect to the reference signal, and a multiplexer configured to select one of the phase shifted signals.

REFERENCES:
patent: 6160856 (2000-12-01), Gershon
patent: 2003/0016762 (2003-01-01), Martin et al.
patent: 2007/0164835 (2007-07-01), Co
patent: 2007/0242026 (2007-10-01), Julian et al.
patent: 2007/0291875 (2007-12-01), Lee et al.
patent: 2008/0042706 (2008-02-01), Yang et al.
International Search Report and Written Opinion—PCT/US2010/026941, International Search Authority—European Patent Office—Mar. 22, 2011.

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